Cov khoom nta ntawm cov suab qib decibel meter
1. Ntau yam: 40 ~ 130dB
2. Tsis siv neeg thiab phau ntawv hloov
3. Instantaneous tus nqi ntsuas hom
4. Sau tus nqi siab tshaj / qhov tsawg kawg nkaus, thiab ntsuas tus nqi nyeem ntawv siab tshaj plaws
5. Kev ceev / tsis siv neeg kaw
